Fry said:
i have seen fish deprived of light that become extremely jumpy around people, so in my experience light is good
You're right, Light is good.. But only in a CYCLE. The fish became jumpy because outside movement looks like a major threat to them when they are always in the dark.
i've seen comments and articles that say your fish will grow faster with constant lighting, that's contradictory to stunted growth, i don't know if either is true
i mean, how much of your comments are based on experience and how much are just theories or thoughts?
I recently had a long discussion with a man who used to own a LFS, as well as worked in a breeding hatchery for ornamental fish in florida. He worked as a fish specialist for both Petco and Petsmart.
One of the main topics of our conversation was mass-breeding, grow-outs, and hormone use when culturing fish. He had alot of interesting tips such as chemicals you can add to the water to enhance fertility to create larger batches of fry.. But one of the most interesting topics he touched down on was how to maximize the effeciency of the 'Night and Day' cycle to speed the growth of young fish. He emphasised how important it was to have a consistant cycle with proper nutrition and water quality. He said he could grow fish at an alarming rate, and he accredited to primarily the use of the night cycle.
You can call it Theory or Personal experience, but that sounds like a good source of info to me.
On a personal level, when I first starting keeping fish I left the tank lights on 24/7.. I would watch them at night to help me go to sleep. After about a month of this, I noticed my African Cichlids would constantly pace the corners of the glass and act very odd, 'shimmying' and 'scraping' themselves against decor.. Soon after, they came down with a bad case of the shimmies.. When I went to my LFS to cure the problem (my first disease outbreak), the LFS guy investigated my tank situation.. After he asked me multiple questions and came to no conclusion, I mentioned 'When I go to sleep at night, the Africans always go crazy in the corners of the tanks'.. And BINGO, his light went on (no pun), and he asked if I had ever turned the lights off..? Come to find out, that was my problem. I lost most the africans, but never made that mistake again..
Hope that helps!
